dhr. prof. dr. J. (Jean) d' Aspremont

  • Faculteit der Rechtsgeleerdheid
    Internationaal Publiekrecht
  • Oudemanhuispoort  4-6
    1012 CN  Amsterdam
  • J.dAspremont@uva.nl
    T:  0205253184


Jean d'Aspremont is Professor of International Legal Theory at the University of Amsterdam where he is affiliated with the Amsterdam Centre for International Law (ACIL). He holds the Chair of Public International Law at the University of Manchester. He also is Guest Professor at the Geneva Academy of International Humanitarian Law and Human Rights (HEID/University of Geneva). He is member of the Royal Holland Society of Sciences and Humanities (KHMW). He is a member of the Scientific Advisory Board of the European Journal of International Law. He used to be Editor-in-Chief of the Leiden Journal of International Law.


His areas of research include most major subjects of general Public International Law and, in particular, questions pertaining to the Law of International Organizations, Statehood, Sources of International Law, State Responsibility, International Dispute Settlement, International Humanitarian Law and International Legal Theory.


- Formalism and the Sources of International Law. A Theory of the Ascertainment of Legal Rules (Oxford University Press, 2011) (re-issued as paperback in 2013) (Monograph)

- Epistemic Forces in International Law (Edward Elgar, forthcoming 2015) (Monograph)

- The Oxford Handbook on the Sources of International Law (Oxford University Press, forthcoming 2017) (co-edited with Samantha Besson) 

- Fundamental Concepts for International Law (Edward Elgar, forthcoming 2016) (co-edited with Sahib Singh) 

- International Legal Positivism in a Post-Modern World (Cambridge University Press, 2014) (co-edited with Jörg Kammerhofer) 

- L'Etat non démocratique en droit international. Etude critique du droit international positif et de la pratique contemporaine (Pedone, 2008) (Monograph)

- Droit international humanitaire (Pedone, 2013) (Monograph co-authored with J. de Hemptinne)

- Participants in the International Legal System: Multiple Perspectives on Non-State Actors in International Law (Routledge, 2011) (edited volume)


Besides these books and edited volumes he has published more than 70 peer-reviewed articles and book chapters, including publications in top-tier journals like the European Journal of International Law and the International and Comparative Law Quarterly.


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Formalism and the Sources of International Law

Participants in the International Legal System

Non-Democratic States and International Law

(L'Etat non démocratique en droit international)

International Humanitarian Law

(Droit international humanitaire)

Forthcoming talks and presentations by Jean d'Aspremont

  • 'Contemporary Techniques to Create Knowledge about International Law', Cambridge, 18 May 2013 
  • "Formalism and International Law", University of Lancaster, 24 April 2013
  • "Subjects and actors in international law-making: Conflicting Cognitive Choices for International Norm-Generating Processes", University of Vanderbilt (Nashville), 9 February 2013

Past talks and presentations by Jean d'Aspremont

  • 'Contemporary Techniques to Create Knowledge about International Law', Workshop 'Doing Law Beyond the State: Exploring Research Methodologies in EU and International Law', University of Sheffield, 18-19 January 2013
  • "The Fissures in the Law of State Responsibility", Oxford, 17 January 2013
  • 'The Use of Force and the Concept of International Legal Order', University of Naples Frederico II, 17 December 2012
  • 'The Production of Knowledge in Legal Scholarship', University Frederic II, Naples, 18 December 2012
  • 'The role of Regional Organisations',, Conference 'Aux confins du Jus ad Bellum et du Jus in Bello', Grenoble, 22-23 November 2012
  • 'Legal Research and the Sources of Law, Graduate Institute', Geneva, 22 November 2012
  • 'A European Law of International Responsibility? The Articles on the Responsibility of International Organizations and the European Union', Conference on the the EU Accession to the ECHR, Brussels, 16-17 November 2012
  • 'Deformalization in International Law', University of Los Andes, Bogota, Colombia, 30 October 2012
  • 'New legal developments in the contemporary practice of recognition of States and governments', Colombian Ministry of Foreign Affairs, Bogota, 29 October 2012
  • 'The pluralization of the modes of production and dissemination of knowledge about (international) law', Conference on Stateless Law? The Future of the Discipline, McGill University, 28-29 September 2012 
  • 'International Legal Scholarship in the Cyberage: The New Modes of Production and Dissemination of Knowledge about International Law', 2012 SLS Conference, University of Bristol, 12 September 2012 
  • "Holding International Organizations Responsible: The Cracks in the Law of International Responsibility", Lunchtime Lecture Series des Instituts für Völkerrecht, University of Bonn, 14 June 2012
  • "The Sources of International Humanitarian Law: Towards an Autonomous Regime?", Graduate Institute of International and Development Studies, Geneva, 1 June 2012.
  • "Latest Developments Pertaining to the Recognition of Governments", British Institute of International and Comparative Law, 30 April 2012, London. 
  • "Deformalizationin International Law: the Temptation of a move away from the theory of sources", Lauterpacht Research Center of International Law, Cambridge, 27 April 2012 (watch the lecture here: http://www.sms.cam.ac.uk/media/1249006;jsessionid=461E0C0D0C22324BD7FCF7BC26E9443E)
  • "International Judges and Conflict Avoidance Techniques", Durham University, 26 April 2012
  • " The Challenges of Deformalization in International Law ", ILA Lecture, University College London (UCL), London 25 April 2012
  • "Latest Developments Pertaining to the Recognition of Governments", BritishInstitute of International and Comparative Law, London, 30 April 2012. 
  • "Formalism and the Sources of International Law", IILJ International Legal Theory Colloquium Convened with Professors Benedict Kingsbury and J.H.H. Weiler, NYU Law School, 3 April 2012
  • "International Legal Positivism in a Post-Modern World", Annual meeting of the American Society of International Law, Washington, 28-29 March 2012
  • "Formalism and the Sources of International Law", Seminar of the ILA-Belgian Branch, Brussels, 9 December 2011
  • "Hart, Enforcement and International Law", Seminar in the honor of Bruno Simma, Glasgow, 2 December 2011
  • "Multiplicity of Tortfeasersand Shared Responsibility: Unearthing Plurality in the Law of International Responsibility", ACIL SHARES conference, 17 November 2011, Amsterdam
  • "Hart and postmodern positivism", Amsterdam Workshop on International Legal Positivism, 3 November 2011
  • "Le déclin de la théorie des sources en droit international", Brussels, Facultés universitaires Saint-Louis, 30 September 2011
  • "Formalism and the Sources of International Law", FacultySeminar, 19October 2011
  • "The Dialectical Methodology of Global Administrative Law", Paris-X Nanterre La Défense,16 June 2011
  • "Customary Investment Law: Story of a Paradox", Leiden, 15 June 2011
  • "The Control of International Criminal Tribunals by Domestic Courts", Workshop on International Criminal Law and its Application within Domestic Legal Orders, Macerata,Italy, 10 June 2011
  • "Inclusive law-making and law-enforcement processes for an exclusive international legal system", Oxford University, 21 May 2011
  • "The International Legal Scholar in Palestine: Hurling Stones under the guise of Legal Forms? - A Talk with Martti Koskenniemi and Mudar Kassis", Birzeit University, Palestine, 19 April 2011
  • "The articulation between international human rights, international humanitarian law and international refugee law", ICTR-UNHCR workshop, Arusha, Tanzania, 11 April 2011
  • "The PCIJ's in a multi-judiciary world" Conference on the PCIJ's Legacy, Queen Mary, University of London, November 2010
  • "State Responsibility and Transitional Justice", Jus Post Bellum ATLAS Conference, Brussels, 21-22 October 2010
  • "The International Judge and Science", ILA Brazil Conference, Joao Pessoa, Brazil, October 2010
  • "The Rise and Fall of Democratic Legitimacy in International Law", European Society of International Law, Cambridge, September 2010
  • "Deformalization in International Law", Max Planck Institute for Comparative Public Law and International Law, Heidelberg, 6 July 2010
  • "TheWorld Court and Statehood", Pristina, Kosovo, 4 July 2010
  • "Informal international public policy making: from a pluralization of international norm-making to a pluralization of our concept of international law", HiiL-project on New International Law, Geneva, 25 June 2010
  • "Deformalization in International Law", McGill University, 28 May 2010
  • "Les fluctuationsde la gouvernance démocratique en droit international,Université du Québec à Montréal (UQAM), 27 May 2010
  • "Softness in International Law", Université du Québec à Montréal (UQAM), 26 May 2010 
  • "L'Etat non-démocratique en droit international", University of Galatasaray, May 2010
  • "Deformalization in International Law", The National University of Singapore (NUS), 6 April 2010 
  •  "Deformalization in International Law", The University of Sydney, 1 April 2010
  • "Deformalization in International Law", the National University of Australia (ANU), 25 March 2010 
  • "La Démocratie et le droit international", Université de Kinshasa, January 2010
  • "International Law and Non Democratic States", Colloquium of the Diritti umani e diritto internazionale, Catania, December 2009
  • "The policy of formalism in international law", participationto a roundtable on the occasion of the colloquium on "Evaluating Critical Approaches to International Law", CERDIN, Université de Paris I, 11 December 2009
  • "Global Values v. Common Interests, The Foundations of International Humanitarian Law", Conference on International Humanitarian Law (IHL) between Universalism and Cultural legitimacy: Perspectives from Muslim Countries, Asser Institute, The Hague, November 2009
  • "Enforcing IHL at the domestic Level: the Fallacious Idea of Universal Criminal Jurisdiction",Minerva Centre for Human Rights and Hebrew University of Jerusalem, November 2009
  • "Soft Law Strategies in International Legal Scholarship", ILA Talks, Universityof Bristol, 5 November 2009
  • "Non-State Actors in International Law", ABILA Annual Conference, New York, November 2009
  • "The Incompatibilitybetween Contemporary International Law and the Potential Solutions to the Israeli-Palestinian Conflict", Conference on Israel/Palestine: Mapping Models ofStatehood and Paths to Peace, Toronto, June 2009
  • "Democratic conditionality in international trade law", University of Montreal (UDM), June 2009
  • "Coups d'Etats and International Law", Presentation at the CORIM (Conseil des Relations Internationales de Montréal), June 2009
  • "The Systemic Integration of International Law by Domestic Judges", Unity or Fragmentation of International Law - the Role of International and National Tribunals. Oslo, May 2009"The Counter-Measures taken by International Organizations against Third States", Bologna Seminar on the Counter-Measures by International Organizations, April 2009
  • Non-StateActors in International Law, FWO Seminar on Non-State Actors at the Katholieke Universiteit Leuven (KUL), March 2009 • "La licéité des coups d'Etat", University of Paris Sud, February 2009
  • "The Concept of Autonomy of International Organizations, Workshop Series on International Organizations and the Idea of Autonomy", University of Sheffield (organized by N. D. White and R. Collins),October 2008
  • "Le Tyrannicide en droit international", Common meeting of the French and German Societies of InternationalLaw, Hamburg, October 2008
  • "The European Endeavors to Constitutionalize the International Legal Order, GARNET Conference on "Mapping Integration and Regionalism in aGlobal World: The EU and regional governance outside the EU", September 2008
  • "The Doctrinal Illusion of Heterogeneity in International Law-Making", Heidelberg General conference of the European Society ofInternational Law (ESIL), September 2008
  • "The Legitimacy of Insurgents in International Law", Heidelberg General conferenceof the European Societyof International Law (ESIL), September 2008
  • "La licéité des coups d'Etat en droit international", Société française du droit international, Brussels, June 2008
  • "The foundations of the international legal order", Conference on Theorizing the international legal order, University of Swansea, May 2008
  • "Values and Interests in International Law: the Eastern European Perspective", Research Forum of the European Society of International Law (ESIL), Budapest, September 2007
  • "The dual character of Legitimacy",General GARNET Conference, Warwick, September 2007
  • "The Effects of War on Treaties",GARNET, University ofOslo, May 2007
  • "The contribution of the Asian Scholarship to the public character of International Law", Plenary Session of the Inaugural Meeting of the Asian Society of International Law,Singapore, April 2007
  • "The Abuse of the Legal Personality of International Organizations, conference on the Accountability of International Organizations organized by the KUL & the University of Antwerp, Brussels, March2007
  • "Democracy and International Law", Global Research Forum, New York University (NYU), September 2005 • "Contemporary wars: which rules?",Université de Montréal (UDM), September 2005
  • "The Creation of Democratic States in International Law", Research Forum of the European Society of International Law (ESIL), Geneva, May 2005
  • "Les réserves à la Convention-Cadre du Conseil de l'Europe sur les minorités nationales", Colloque de l'Association Henri Capitant sur les minorités, MexicoCity, May2002.

Leiden Journal of International Law

Jean d'Aspremont is Editor-in-Chief of the Leiden Journal of International Law

Submission of a manuscript

If you wish to submit a manuscript to the Leiden Journal of International Law, please use the ScholarOne submission system. 


  • J. d' Aspremont & S. Besson (2017). Oxford Research Handbook on the Sources of International Law. Oxford: Oxford University Press.


  • J. d' Aspremont & Sahib Singh (2016). Fundamental Concepts for International Law: Constructing Intelligibility in International Legal Studies. London: Edward Elgar.


  • J. d' Aspremont (2015). Droit international et développement : Les instruments et les sources. In S DOUMBÉ-BILLÉ & K Neri (Eds.), Droit international et développement. Pedone.
  • J. d' Aspremont (2015). Réflexions critiques sur la normativité du droit international des droits de l’homme. In H. Tigroudja & L. Hennebel (Eds.), Critiques du droit international des droits de l'homme. Pedone.
  • J. d' Aspremont (in press). Non-state actors and the social practice of international law. In M. Noortmann, A. Reinisch & C. Ryngaert (Eds.), Non-state actors in international law (Studies in international law). Hart.
  • J. d' Aspremont (2015). The collective security system and the enforcement of international law. In M. Weller (Ed.), The Oxford handbook of the use of force in international law (Oxford handbooks in law) (pp. 129-156). Oxford: Oxford University Press.[go to publisher's site]
  • J. d' Aspremont (2015). The multidimensional process of interpretation: content-determination and law-ascertainment distinguished. In A. Bianchi, D. Peat & M. Windsor (Eds.), Interpretation in international law (pp. 111-129). Oxford: Oxford University Press.
  • J. d' Aspremont (in press). Towards a new theory of sources in international law. In A. Orford & F. Hoffmann (Eds.), The Oxford handbook of the theory of international law (Oxford handbooks in law). Oxford: Oxford University Press.
  • J. d' Aspremont (2015). Epistemic forces in international law: foundational doctrines and techniques of international legal argumentation. (Elgar international law series). Cheltenham: Edward Elgar.
  • J. d' Aspremont (2015). The Use of Force and the Enforcement of the International Legal Order. In M Weller (Ed.), Oxford Handbook on the Prohibition to Use Force. Oxford: Oxford University Press.
  • J. d' Aspremont (in press). Regimes' legitimacy crises in international law: Syria and its competing representatives. In R. Grote & T.J. Röder (Eds.), Constitutional change after the Arab Spring. New York: Oxford University Press.
  • J. d' Aspremont (in press). The law of international organisations and the art of reconciliation: from dichotomies to dialectics. International Organizations Law Review.


  • J. d' Aspremont (2014). The Idea of Rules in the Sources of International Law. British Year Book of International Law.
  • J. d' Aspremont (2014). The International Law of Statehood: Craftsmanship for the Elucidation and Regulation of Birth in the International Society. Connecticut Journal of International Law.
  • J. d' Aspremont (2014). • ‘Effectivity’ in International Law: Self-Empowerment Against Epistemological Claustrophobia. In Proceedings of the Annual Meeting of the American Society of International Law.
  • J. d' Aspremont & M. Mbengue (2014). Strategies of Engagement with Scientific Fact-finding in International Adjudication. Journal of International Dispute Settlement.
  • J. d' Aspremont (2014). The Law of International Responsibility and Multilayered Institutional Veils: The Case of Authorized Regional Peace-Enforcement Operations. In K. Bannelier (Ed.), Aux Confins du Ius ad Bellum et du Ius in Bello. Pedone.
  • J. d' Aspremont & J. Kammerhofer (2014). Introduction: the future of international legal positivism. In J. Kammerhofer & J. d' Aspremont (Eds.), International legal positivism in a post-modern world (pp. 1-19). Cambridge: Cambridge University Press.
  • J. d' Aspremont (2014). The European tradition of the sources of international law. In D. Alland, V. Chetail, O. de Frouville & J.E. Viñuales (Eds.), Unité et diversité du droit international: écrits en l'honneur du professeur Pierre-Marie Dupuy = Unity and diversity of international law: essays in honour of Professor Pierre-Marie Dupuy (pp. 201-216). Leiden: Martinus Nijhoff.
  • J. d' Aspremont (in press). Succession et décolonization. In G. Distefano & G. Gaggioli (Eds.), Commentaire de la Convention de Vienne sur la Succession des Etats en matière de traité.
  • J. d' Aspremont (2014). The international law of statehood: craftsmanship for the elucidation and regulation of birth and death in the international society. In P. d' Argent, B. Bonafé & J. Combacau (Eds.), Les limites du droit international - Essais en l'honneur de Joe Verhoeven / The limits of international law - Essays in honour of Joe Verhoeven (Mélanges) (pp. 267-292). Bruxelles: Bruylant.[go to publisher's site]
  • J. d' Aspremont (2014). Send back the lifeboats: confronting the project of saving international law. American Journal of International Law, 108 (4), 680-689. doi: 10.5305/amerjintelaw.108.4.0680
  • J. d' Aspremont (2014). A European law of international responsibility? The articles on the responsibility of international organizations and the EU. In V. Kosta, N. Skoutaris & V.P. Tzevelekos (Eds.), The EU Accession to the ECHR (Modern Studies in European Law, 48) (pp. 75-86). Oxford: Hart.
  • J. d' Aspremont (2014). Formalism versus Flexibility in the Law of Treaties. In C.J. Tams, A. Tzanakopoulos & A. Zimmermann (Eds.), Research Handbook on the Law of Treaties (Research Handbooks in International Law) (pp. 257-284). Cheltenham: Edward Elgar.[go to publisher's site]
  • J. d' Aspremont (2014). Herbert Hart in today's international legal scholarship. In J. Kammerhofer & J. d' Aspremont (Eds.), International legal positivism in a post-modern world (pp. 114-150). Cambridge: Cambridge University Press.
  • J. d' Aspremont (2014). Subjects and Actors in International Law-making: conflicting cognitive choices for international norm-generating processes. In Research Handbook on the Theory and Practice of International Lawmaking. Elgar.









  • J. d' Aspremont (2012). La déformalisation dans la théorie des sources du droit international. In Y. Cartuyvels, H. Dumont, P. Gérard, F. Ost, M. van de Kerchove & I. Hachez (Eds.), Les sources du droit revisitées. Volume 4: théorie des sources du droit (Publications des Facultés universitaires Saint-Louis, 135). Limal: Anthémis.


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